[API Proposal]: Add nullable annotation to INumberBase<>.TryParse

[MichalBrylka]

Background and motivation

Similarly to #71309, would it be possible to add [MaybeNullWhen(false)] annotation to INumberBase<> interface?
currently we have

static abstract bool TryParse([NotNullWhen(true)] string? s, NumberStyles style, IFormatProvider? provider, out TSelf result);

static abstract bool TryParse(ReadOnlySpan<char> s, NumberStyles style, IFormatProvider? provider, out TSelf result);

API Proposal

static abstract bool TryParse([NotNullWhen(true)] string? s, NumberStyles style, IFormatProvider? provider, [MaybeNullWhen(false)] out TSelf result);

static abstract bool TryParse(ReadOnlySpan<char> s, NumberStyles style, IFormatProvider? provider, [MaybeNullWhen(false)] out TSelf result);

API Usage

Like before but with nullability info when implemented by classes

Alternative Designs

No response

Risks

No response

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Issue Details

---

Background and motivation

Similarly to #71309, would it be possible to add [MaybeNullWhen(false)] annotation to INumberBase<> interface?
currently we have

static abstract bool TryParse([NotNullWhen(true)] string? s, NumberStyles style, IFormatProvider? provider, out TSelf result);

static abstract bool TryParse(ReadOnlySpan<char> s, NumberStyles style, IFormatProvider? provider, out TSelf result);

API Proposal

static abstract bool TryParse([NotNullWhen(true)] string? s, NumberStyles style, IFormatProvider? provider, [MaybeNullWhen(false)] out TSelf result);

static abstract bool TryParse(ReadOnlySpan<char> s, NumberStyles style, IFormatProvider? provider, [MaybeNullWhen(false)] out TSelf result);

API Usage

Like before but with nullability info when implemented in classes

Alternative Designs

No response

Risks

No response

Author:	MichalBrylka
Assignees:	-
Labels:	api-suggestion, area-System.Numerics
Milestone:	-

[MichalBrylka]

I can provide a PR if needed

[dakersnar]

cc @stephentoub

[stephentoub]

Yeah, we should fix this.

[MichalBrylka]

@stephentoub should I post a PR ?

[stephentoub]

That'd be helpful, thanks.

[MichalBrylka]

done in #76272. Please provide info if additional files need to be changed